refactor: refactor task logic for better scalability (#76)

* refactor: a big refactor. wip

* refactor: port handle file

* refactor: place all handlers

* fix: task info nil pointer

* feat: enhance task progress tracking and context management

* feat: cancel task

* feat: stream mode

* feat: silent mode

* feat: dir cmd

* refactor: remove unused old file

* feat: rule cmd

* feat: handle silent mode

* feat: batch task

* fix: batch task progress and temp file cleanup

* refactor: update file creation and cleanup methods for better resource management

* feat: add save command with silent mode handling

* feat: message link

* feat: update message prompts to include file count in storage selection

* feat: slient save links

* refactor: reduce dup code

* feat: rule type

* feat: chose dir

* feat: refactor file handling and storage rules, improve error handling and logging

* feat: rule mode

* feat: telegraph pics

* fix: tphpics nil pointer and inaccurate dirpath

* feat: silent save telegraph

* feat: add suffix to avoid file overwrite

* feat: new storage telegram

* chore: tidy go mod

client/middleware/default.go

@@ -0,0 +1,29 @@
+package middleware
+
+import (
+	"context"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"github.com/gotd/contrib/middleware/floodwait"
+	"github.com/gotd/td/telegram"
+	"github.com/krau/SaveAny-Bot/client/middleware/recovery"
+	"github.com/krau/SaveAny-Bot/client/middleware/retry"
+)
+
+// https://github.com/iyear/tdl/blob/master/core/tclient/tclient.go
+func NewDefaultMiddlewares(ctx context.Context, timeout time.Duration) []telegram.Middleware {
+	return []telegram.Middleware{
+		recovery.New(ctx, newBackoff(timeout)),
+		retry.New(5),
+		floodwait.NewSimpleWaiter(),
+	}
+}
+
+func newBackoff(timeout time.Duration) backoff.BackOff {
+	b := backoff.NewExponentialBackOff()
+	b.Multiplier = 1.1
+	b.MaxElapsedTime = timeout
+	b.MaxInterval = 10 * time.Second
+	return b
+}